Grinding machine



Dec 22, 1942 BDAc-HILLE 2,305,679

vGRINDING @CHINE 'Filed March 10, 1941 Earn arde lffahz'/ Z 2 aINVENToR.

Patented Dec. 22, 1942 UNITED STATES PATENT OFFICE GRINDING MACHINEBernardo DAchille, New Kensington, Pa.

Application March 10, 1941, Serial No. 382,635

3 Claims.

The present invention relates to improvements in grinding machines andhas particular reference to machines for grinding and crushing meat,fruits, vegetables and the like.

An object of the invention is the provision of a grinding machine ofgenerally improved design.

Another object of the invention is to provide a grinding machine whichis constructed so as to facilitate cleaning thereof.

A further object of the invention is the provision of a grinding machinecomposed of parts which may be quickly and easily separated orassembled.

Still another object of the invention is to provide a machine of theaforesaid character which is efficient in operation and durable inconstruction.

Other objects and advantages of the invention will become apparent asthe description progresses.

In the accompanying drawing forming a part of this specification and inwhich like numerals are employed to designate corresponding partsthroughout: p

Figure 1 is a longitudinal sectional view through the assembled machine.

Figure 2 is a fragmentary detail elevation showing a modifiedconnection, and

Figure 3 is a longitudinal section taken on line 3--3 of Figure 2.

Referring to the drawing, wherein is illustrated a preferred embodimentof the invention, I0 designates the body of a grinder casing which is ofapproximately cylindrical formation shaped at the top to provide anenlarged circular hopper Il. The body I0 is formed with a rearwardlydirected stepped sleeve I2 having the bore thereof in axial alignmentwith a front opening I3.

To the hopper II is connected, as by the pin and bayonet slot connection46, a funnel 41 for feeding the material to be ground into the grindercasing.

To the front of the grinder body I0 is detachably connected, inregistration with the front opening I3, an elongated tubular extensionsection 48 held in position by a ring fitting 49 having an outwardlyflaring lip 50. The extension section 48 in the form of a frusto-conicalrigid perforated member disposed axially of the casing and having adiminishing taper toward its outer end. On the outer reduced end of theperforated section or sieve 4B is mounted an extension fitting in theform of an angular discharge spout 5I having its inner portiontelescopically tted over the open end of the sieve.

A tapered worm 5I is mounted to extend axially through the casing bodyand the extension sieve and is driven through the medium of a separableshaft section having a rearwardly directed circular portion 52 journaledin the sleeve I2 and a forward portion 53 arranged concentrically withina bore 54 of the worm. This shaft is provided with a thrust collar 55bearing against the rear wall of the casing and a reduced squaredextension 56 fitted in a correspondingly shaped socket in the worm toprovide a driving connection. A compression spring 51 coiled about theshaft portion 53 tends to yieldingly thrust the worm forwardly in thesieve. This thrust movement is counteracted at the forward end -by acoiled compression spring 58 mounted to extend axially between washers59 and 60, the latter bearing against a pin 6I extending transverselykthrough the rear portion of the spout 5I. This spring mounting isdesigned to yieldingly position the worm so that the edge portion isVarranged close to the sieve but not directly contacting the same.

The products to be ground or crushed and for the extraction of juice arefed through the funnel 41 onto the rear portion of the worm and, uponrotation of the latter, advanced through the sieve 48 wherein it issubjected to a grinding and crushing action which eifectually squeezesthe juice from the solid pulp matter. The extracted juice flows throughthe apertures in the sieve into a suitable receptacle, the flaring lip50 serving to divert liquid flowing rearwardly down the sieve andpreventing accumulation of juice on the body. The solid matter remainingin theV sieve is forced through the forward end thereof and dischargedthrough the spout 5I into a suitable collection receptacle.

I also contemplate a modified structure for the connection of the spout5| with the outer reduced end of the sieve 48, as shown at Figures 2 and3. In this arrangement a fastener ring 62 is welded or otherwise securedon the sieve inwardly of a cylindrical end portion 63 thereof,

. the edge indicated at 64 being formed with an angular flange 65 ofenlarged diameter forming, in conjunction with the portion 63, anannular groove in which is to vbe fitted the companion portion of thespout and which portion is provided with bayonet slots 66 adapted toengage pins 61 projecting radially outward of the portion 63. Thisconnection affords a tight leak- `proof joint which is quickly andeasily detachable for removal of the spout when necessary. It is to beunderstood that the forms of my invention herewith shown and describedare to be taken as preferred and modified examples of the same and thatvarious changes relative to the material, size, shape and arrangement ofparts may be resorted to without departing from the spirit of theinvention or the scope of the subjoined claims.

Having thus described my invention, I claim:

l. In a device of the character described, a body casing, an aperturedtubular extension connected with and projecting from the casing, a wormrotatably journalled in the casing and extending through the tubularextension, a spring acting to yieldingly force the worm axially outwardof the casing, and a second spring acting against the outer end of theworm yieldingly forcing the same inward, of the casing. Y

2. In a device of the character described, a body casing, a perforatedtubular extension connected to a side outlet of the casing andprojecting therefrom, the said extension having a diminishing tapertoward its outer end, a discharge spout attached to the outer endlofthefrom, a rotary worm extending through the casing and the taperedextension, the said worm having that portion thereof within theextension tapered in correspondence with the taper of the extension, andmeans acting against the said worm so as tov maintain the taperedportion in close proximity to and spaced from the tapered extensionwhile allowing resilient axial displacement of the worm in bothdirections.

BERNARDO DACHILLE.

